PL/1

PL/I (Programming Language One) is a computer programming language developed in the 1960s designed for scientific, engineering, and business applications. It combines features from both scientific languages and business languages, allowing programmers to write complex programs efficiently. PL/I supports structured programming, data handling, and advanced error checking, making it versatile for various types of software. Its goal was to streamline programming tasks and improve productivity across different industries, serving as a powerful tool for developing large-scale, reliable software systems.